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-rw-r--r--src/servers/crtc.c129
1 files changed, 129 insertions, 0 deletions
diff --git a/src/servers/crtc.c b/src/servers/crtc.c
new file mode 100644
index 0000000..2e884a8
--- /dev/null
+++ b/src/servers/crtc.c
@@ -0,0 +1,129 @@
+/**
+ * coopgammad -- Cooperative gamma server
+ * Copyright (C) 2016 Mattias Andrée (maandree@kth.se)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#include "crtc.h"
+#include "../state.h"
+#include "../communication.h"
+
+#include <errno.h>
+#include <string.h>
+
+
+
+/**
+ * Handle a ‘Command: enumerate-crtcs’ message
+ *
+ * @param conn The index of the connection
+ * @param message_id The value of the ‘Message ID’ header
+ * @return Zero on success (even if ignored), -1 on error,
+ * 1 if connection closed
+ */
+int handle_enumerate_crtcs(size_t conn, const char* restrict message_id)
+{
+ size_t i, n = 0, len;
+ char* restrict buf;
+
+ for (i = 0; i < outputs_n; i++)
+ n += strlen(outputs[i].name) + 1;
+
+ MAKE_MESSAGE(&buf, &n, 0,
+ "Command: crtc-enumeration\n"
+ "In response to: %s\n"
+ "Length: %zu\n"
+ "\n",
+ message_id, n);
+
+ for (i = 0; i < outputs_n; i++)
+ {
+ len = strlen(outputs[i].name);
+ memcpy(buf + n, outputs[i].name, len);
+ buf[n + len] = '\n';
+ n += len + 1;
+ }
+
+ return send_message(conn, buf, n);
+}
+
+
+/**
+ * Get the name of a CRTC
+ *
+ * @param info Information about the CRTC
+ * @param crtc libgamma's state for the CRTC
+ * @return The name of the CRTC, `NULL` on error
+ */
+char* get_crtc_name(const libgamma_crtc_information_t* restrict info,
+ const libgamma_crtc_state_t* restrict crtc)
+{
+ if ((info->edid_error == 0) && (info->edid != NULL))
+ return libgamma_behex_edid(info->edid, info->edid_length);
+ else if ((info->connector_name_error == 0) && (info->connector_name != NULL))
+ {
+ char* name = malloc(3 * sizeof(size_t) + strlen(info->connector_name) + 2);
+ if (name != NULL)
+ sprintf(name, "%zu.%s", crtc->partition->partition, info->connector_name);
+ return name;
+ }
+ else
+ {
+ char* name = malloc(2 * 3 * sizeof(size_t) + 2);
+ if (name != NULL)
+ sprintf(name, "%zu.%zu", crtc->partition->partition, crtc->crtc);
+ return name;
+ }
+}
+
+
+/**
+ * Get partitions and CRTC:s
+ *
+ * @return Zero on success, -1 on error
+ */
+int initialise_crtcs(void)
+{
+ size_t i, j, n, n0;
+ int gerror;
+
+ /* Get partitions */
+ if (site.partitions_available)
+ if (!(partitions = calloc(site.partitions_available, sizeof(*partitions))))
+ goto fail;
+ for (i = 0; i < site.partitions_available; i++)
+ {
+ if ((gerror = libgamma_partition_initialise(partitions + i, &site, i)))
+ goto fail_libgamma;
+ outputs_n += partitions[i].crtcs_available;
+ }
+
+ /* Get CRTC:s */
+ if (outputs_n)
+ if (!(crtcs = calloc(outputs_n, sizeof(*crtcs))))
+ goto fail;
+ for (i = 0, j = n = 0; i < site.partitions_available; i++)
+ for (n0 = n, n += partitions[i].crtcs_available; j < n; j++)
+ if ((gerror = libgamma_crtc_initialise(crtcs + j, partitions + i, j - n0)))
+ goto fail_libgamma;
+
+ return 0;
+
+ fail_libgamma:
+ libgamma_perror(argv0, gerror);
+ errno = 0;
+ fail:
+ return -1;
+}
+